Computing and recording machine.



W. H. MQFARLAND. COMPUTING AND nnoonmm MACHINE.

APPLIOATION nun nov. 21. 1905. Patented Oct 25,1910

6 SHEETS-SHEET 1.

Wmvsssss W. H. MoPA RLAND. COMPUTING AND RECORDING MACHINE.

APPLICATION FILED NOV. 21. 1906.

flu 9 1 5 2 lb 0 0 m M m P I 2 T E E 7 4 S T E B H an 5 v INVENTOR BY HIS ATTORNEY Y WITNESSES g ti w. H McPARLAND. COMPUTING AND RECORDING MACHINE. APPLIOATION FILED NOV. 21, 1905. 973, 3 Patented Oct. 25, 1910.

5 EHEETS-SHEET 3.

WITNESSES luvsuron BY H s ATTORNEY I w. H. McPARLAND. COMPUTING AND RECORDING MACHINE.

APPLICATION IILIBD NOV. 21, 1905.

Patnted 0cc.25,1910.

v INVENTOR wnwsssEsv W. H. MOFARLAND. COMPUTING AND RECORDING- MACHINE. APPLICATION rILnn nov. 21. 1005.

Patented Oct. 25, 1910.

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Arronkinr WILLIAM H. MQFARLAND, OF EAST ORANGE, NEW JERSEY.

COMPUTING AND RECORDING MACHINE.

Specification of Letters Patent.

Patented Oct. 25, 191.0.

Application filed November 21, 1905. Serial No. 288,500.

[0 all whom it may concern:

Be it known that I, \VILLIAM ll. Mcbwn- |'..\xo, a citizen of the United States, rcsid ing in East Orange, in the county of Essex and State of New Jersey, have invented certain new and useful mprovements in Comj )lll'lllg tllltl Recording BIachines, of which the following is a )ecification.

This invention relates to computing machines, and particularly to those in which multiple sets of figure keys are employed and in which means are )rovided for bolding down the keys as t ey are, depressed until the desired'number is completed, and for thereupon effecting the adding of said number by means of mechanism driven by electrical, manual or other power; the extent of movement of the anions members of the adding mechanism having been det'er mined by said depression of the keys- The invention is adapted also for machines, which both add and record, or print the numbers selected by the keys. In machines of this character, owing to the many mechanical operations that have to be Jerformed after the setting of the keys be ore all the parts are restored to their normal positions, a relatively long interval of time elapses after depressing the keys for one number before they can be depressed for the succeedingnumber, and the operator usually after having turned over the check from which he has just copied finds it necessary to wait for an appreciable interval for the keys to become unlocked, so that he can copy the number 01' amount from the next checl In my application filed Oct. 19th, 1905, No. 283,443, means are shown for effecting the resetting or manipulation of the keys after the operation of a power-driven mechanism is begun and before said operation is finished. According to said application, the keys when depressed are held down. but are released preferably during the initial I stroke. of the powendriven mecl'ianism, and

may be reset for the next number during the final or return stroke of the power-driven mechanism. Thus the machine at. each oporation adds and records the number which was selected by the keys during the preced ing operation. 'lhe operator is thus enabled to set the keys while the power driven mechanism is performing its functions so that when said mechanism comes to rest. it may be set in motion again without any delay to add and record a new number. Thus much time is saved to the operator; and a skilled operator will be able to keep the paw er driven mechanism in operation practically 'without intermission.

The object of my presel'itinvention is to simplify and in'iprovc the mechanism for said purposes and to simplify the operation, particularly with a view to increasing the speed of operation, and rendering it practicable and inexpensive to introduce the improvement into machines as at present constructed.

In the accompanying drawings, Figures 1 and 2 read together form a sectional elevation taken from front to rear of an adding and recording machine constructed in accordance with my improvements; said machine being generally similar tothe well known Pike adding machine. In these figures the parts are shown in normal positions. Fig. 3 is a view similar to Fig. 1,

but showing the position of the parts atthe.

moment when the type impressions are being made. Fig. 4 is a sectional p an of the lower rear portion of the machine. Fig. 5 is a fragmentary view showing one key with its stop both in normal position, another key with its stop both in depressed or abnormal position, and another key depressed while its stop is locked against depression. Fig. 6 is a rear elevation of several keys with their releasable locking or detaining ices. Fig. 7 illustrates the form and mounting of the stops. Figs. 8 and 5) illustrate the key-releasing operation.

normal positions by springs 1". -Stems 2 formed at their lower ends with stops 4 are held up in normal position by springs 2*. The stops 4 serve to position the adding and printing or recording devices substantially in the manner shown in patent to \V. ll. like Jr., No. 763,692. When a key is (le pres ed it is held down by means of a latch 58 which springs into a notch (3 formed in the edge of the key stem said latch being pressed into the notch by'a spring 7, (Fig. (l). The keys are mounted in files, one liletor each denomination, and each of-the latrlies o is m the form of a long strip seen endwise at- Fig. (i and endwise at Fig. 9. so that each latch may lock down any of the keys in its file. Each stem may be provided with two notches to facilitate-making corrections as .laet forth in said patent. The stems 2 carrystant-lyto rotage. By means of a single rocent to its key stem.

ing the stops 4 are mounted in the same files n ith the key stems 1". each stop being adjalVhen a key is do pressed, its spring 1", which at its lower end is connected to the key stem and at its upper end is connected to the stop stem, serves to carry down the stop stem 2, or in other words to set the stop 4. The movement of the key stem is considerably more than that of the stop stem, and is so great that the tension of the spring 1 which is made of relatively heavy wire, is greatly increased during the key stroke. The spring 2 is made of relatively light wire, and so constructed that its tension varies but little during the setting of the stop. Normally the tension of the spring 1 is less than the ten- 1 sion of the spring); but when the former is distended as in the fourth key from the right at Fig. 1 its tension is greater than that of the spring 2. The stops 4 are therefore held'd'o'wn by the springs 1", the latter being keptdistended by reason. of the engagement'of thelatches 5 with the key stems. Hence any keys upon the keyboard may be de ressed to setthelr sto s, and the keys .wi'l be automatically loc ed in their depressed positions, and the stops will be held down by-the keys;

. When'the'keys for a given number have been depressed and the stops 4 set, a trip 8 "-seen at therear of Fig. 1 is lifted by the operator from a recess formed in a disk 9 fixed upon'the usual ower shaft 10, which by means of a suita le clutch tends contation of said shaft the number which has been selected by the keys is both added and recorded and thereupon said shaft is again arrested by the trip 8. A pitman 11 extends from the diskMan operating arm 12 dependin from a rock shaft 13 jou-rnaled in the si es of the machine frame, so that said shaft is-caused to rock first rearwardly' and then forwardly during each revolution of the shaft 10.. At the inltial or rearward rocking of said arm 12 and shaft 13, the operation of the adding and printing mecha nism is effected, and at the return movement of said shaft the parts are restored to normal position. v

The adding and recording mechanism includes a setof bars or devices 14 one for each denomination lying side by side and extending from front to rear of the machine; these bars 14 being normally in their rea-rmost-pos-itions, but when released being drawn forward by springs 15 topositions determined by the depressed stops 4 on the keys. Each of said adding devices 14 carries a set of stops 16 to engage the stops 4. The depressed ke -stops 4 are temporarily bolted down an other stops are locked against depression during the adv'anoemovements of said adding bars 14; this result bsin effected by means of a. series of bolts 11' s iown at Fig. 1 111 stop releasing positions, and at Fig. 3 in stop-locking posiare. held forward by a bar 23 supported by.

depending arms 24. said bar being held in normal )OSltlOll by a palr of cams 25 projecting orwardly and downwardly from the rock shaft 14 and fixed upon the latter.' The cams 25 are barely caught upon the rear face of the bar 23 so that at the beginning of the initial movement of said rock shaft 13, the bar and the bolts 17 are released and thrown back to stop-locking positions.

At their rear ends, the adding bars or devices 14 are pivoted to the lower ends of arms 26 depending from a transverse horizontal shaft 27 and rigidly connehted to the type carriers 28. The arms 26 are held back by means of a horizontal universal bar 29 upon arms 30 mounted on said shaft 27. This universal. bar 29 is controlled by the main power shaft 13; a rearwardly extending cam 31 being fixed upon the latter and engaging a .10ll 32 provided upon the arms 30. During about the middle portion of the initial movement 'of saidrock shaft 13 said roll 32 rides forwardly. along an incline 33 formed upon said cam (being-drawn back by springs 34) thus releasing the bars 14 which are drawn forwardly by 'the springs 15 as far as permitted by the stops 4, the latter being engaged by the stops 16 on the bars 14. Where no stop has been depressed in a file, the bar 14 of that tile remains in normal position with a stop 35 resting against a toe 36 formed upon the bottom of an arm or shutter 37 mounted loosely upon the same shaft 38, asthe latch 5. During the printing and adding operations,' the stops are. held down by the points or hooks 20 on the bolt '17; while the nndepressed stops are locked against movement by reason of said points 20 lying beneath the shoulders 19 thereon. This locking or bolting operation is effected at the beginning of the initial movement of the rock shaft 13 and before the adding members 14 are released for their forward movements.

Almost simultaneously with the backward movements of the bolt 17, the key stems 1 are released from the control ofthe latches 5, this release taking place at the early part of the initial movementof the rock shaft 13, so that the keys may be again set by the operator, while said rock shaft 13 is completing its initial movement and making its the right at braces return movement, Said latches are vibrated away from the key stems, Fig. 8 by means ot' short arms 49 provided upon the rock shafts. 38; a universal release bar 59 engaging all of said short rms and being moved toward ig. 8,-by a bell crank 51 so that the keys may be lifted by their springs 1. Said bell crank 51 is operated by a link 52 and a bell crank 53, the latter having a roll 54, driven by a trip pivoted upon an arm 56 extending upwardly and rearwardly from the rock shaft 13 and fixed thereon, This trip 55 is seen at Fig. 1 below the roll 54, the latter being in normal position; but as the rock shaft 13 turns, the trip 55 rises and engages said roll and 'cams the same rearwardly, Fig. 9. During the remainder of the. initial stroke of the rock shaft. the-- trip moves idly to the Fig. 3 position; and during the return movement of the rock shaft, the trip rides idly over the roll The key releasing movement of the bell crank 53 is therefore completed at the early part of the initial stroke of said rock shaft. Said trip is pivoted at 57 upon said arm 56, and is normally held by a spring 58 against a stop 59 upon said arm 56. Thus it will be seen that the keys may be reset.

by the operator even before the adding members 14 are positioned by the stops 4; thus giving the operator ample time in which to Set the'keys before the completion of the operation of .the power driven mechanism. Hence the work of the operator and the work of the machine may proceed simulta neously, and no interval need elapse between successive operations ofthe power driven machinery, which may be kept almost constantly in motion.

The printing is effected during the terminal portion of. the initial stroke of the maiurwlk shaft 13 by means of an arm 60, Fig. 4, extending back from said shaft and having a wrist 1 engaging a slot 62 formed in the lower end of a link 63. During nearly all of the upward stroke of the arm 60 said wrist travels idly in.the slot 62; but finally the wrist reaches the upper end of the slot and lifts thelink 63, thereby vibrating a lever (54, Fig. l, and moving it upon its fulcrum (35 to the Fig. 3 position. As set forth in said patent said lever 64 is one of a pair of levers between which is mounted a series of hooks (iliCtll'Clill'lg over lips 67 formed on trips 6%. 'whereby said trips are pulled back to the Fig. 3 position. thereby releasing the hammers 69 which, strike types 70, and cause them to make impressions upon the paper rolled around the platen 71; At this time the type carriers 28 stand in different positions,corresponding with the positions of the bars 14 which have been arrested by the depressed stops 4; and hence those types are imprinted upon the paper which correspond to the. previously depressed keys.

Durin the filial half of the revolution of the shaft 10, the return movement of the :l'OCk shaft. 13 is eti'ected and the cam ill acting upon the roll 32 throws back the universal bar 29, thereby restoring the type carriers to normal positions as well as the bars 14, the latter having upon their forward ends rks 72, Fig. 2 to cooperate during their r urn strokes with plnlons 73, to add the number just printed, the result showing upon a series of number wheels 74, as set forth in said patent.

During the final portion of the return stroke of the rock shaft- 13, the cam 25 engages the bar 23, and forces it forwardly to the Fig. 1 position, thereby restoring the bolt 17 to normal position. Thus the stops 4: with their stems 2 are released, and returned to normal positions by the springs 2. In case however, prior to the unbolting of the stops, any key has been depressed (as at A Fig. 3) which is connected to a previously depressed stop,such key being of course held down by its latch 5the spring 1' of the key serves to retain the stop in its depressed position, so that the stop will be locked or bolted down at the next operation of the power driven mechanism. Thus each key may either set its sto) or preventthe previously depressed stop rom returning to normal position, as the case may be. Thus it will be seen that the extent of movement of the adding devices 14 is determined by the depression of the keys although the latter have the novel operation of returning to normal positions in advance of the adding devices. means being provided independent of the keys for detaining the adding devices during the restoration of the keys; that the key locks or latches Flare released as at Fig. 8, while the adding devices H are detained in abnormal positions by the springs l1"); that said latches 5, constitute releasable means called into operation at the depression of the keys for detaining the latter in their depressed positions, said latches being releasable by the powe1'drivcu mechanism; that each complete operation of the power driven mechanism, that is, a single revolution of the shaft 10 or reciprocation of the rock shaft- 13. causes themovement away from and back to normal positions of the printing and adding devices, and that means are provided for men-hanically effecting the selection durin one operation of said power driven mechanism of stops which are to dctermine the positions of the adding and printing devices at the next, operation of;

the left-at Fig. 6 to release the stop 35 and bar 14, The bolts l'7 perforn'i the additional \Vhcnever any key function of lockin the shutters either in'or out of normal pos1tions.- For this purpose, the shutters are provided with books 93, which may pass'freely through recesses .H formed in the rear ends on the bolts. 'hen the latter are moved rearwardly, said hooks catch upon edges of the bolts at 95, and are prevented from being swung to the left at Fig. (l by the movement of the latch 5 when the key is depressed during the completion of the movement of the power driven mechanism. The yielding connection 90 between the shutter and the arm 92 permits the movement of the key and latch, while. the shutter remains stationary. Upon the return of the bolts to normal position at the completion of the operation of the power driven mechanism, said. shutter is released and, the spring 90 causes it to swing to the-left at Fig. 6, thereby releasing the stop 35 and bar 14 for the subsequent operation of the power driven mechanlsm.

Each key-stem is provided with a deep notch 96, normally occupied'by the latch 5, and also with a shallow notch 97 into which said latch dro s when the key is depressed, as shown at'te-middle of Fig. 6. At this time, the hook; 93 stands at the left of the bolt 17, so that when the latter is moved back it serves to lock the shutter a ainst returning to normal position during the completion of the e eration of the power driven mechanism. ence, although both the key and the latch 5 may return to normal positions, still the shutter is locked in abnormal position, so as not to interfere with the return to normal position of its associated adding member 14. After the members 14 are returned to normal positions, the bolts 17 are 40 thrust forwardly to the releasing positions,

. and the latches may'then be swung to the right at Fig. 6 by their springs 7 acting through the arms '92 and stops 91.

Var1 ations may be resorted to within the scope of my invention, and rtions of my improvements ma be used without others.

Havingthus escribed my invention, I claim: 1. In a computing machine,-the.combina tion with a single system of'keys, and restoring springs therefor, of stops set by said keys, individual means to hold the stops stationary during the depression of the keys, springs constituting the sole restoring means of said stops, latches to hold said keys down, means for permitting the keys to be re-' turned to normal positions by their springs in advance of said stops, a series of adding devices, and means formoving said adding devices from normal positionstopoints de--' termined by said stops. f 2. In-a computing machine,-the combina-. "tion with a 'smgljesystem of keys, and restorin springs therefor, of stops set by said;

keys, mdmiidual means to hold the stops stationary during the depression of the keys, springs constituting the sole restorin means of said stops, means detaining said lteys in depressed positions, means for locking all of said stops in depressed positions, means for releasing the keys in advance of the stops, and adding devices whose strokes are limited by said stops.

3. In a computing machine, the combination with a single system of keys, and restoring s rings therefor, of means rendered effective y the depression of said keysfffi'r detaining them in their depressed positions, a series of stops controlled by said keys, in-

dividual springs constituting the sole restoring means of said stops, means for detaining said stops in their depressed or set positions and for releasing said keys in advance of the stops, so that the keys may be again depressed while the sto' 5' remain depressed, and adding devices w ose strokes-arelimitedby said stops. I

4. In a computing machine, the combination with a series of adding devices, of a' sys 'tem of stops therefor, individual springs constituting the sole restoring means of said stops, a single system of keys, key-restoring springs, means for enabling the keys to set and retain their associated stops, means called into action by said keys whenever they are depressed, for detainin them in their depressedpositions, means For detaining the stops when set and for releasing-said keys in advance of the stops, and means for releasing the stops.

5. In a computing machine, the combination with a series of adding devices, of a sys tem of stops therefor, individual springs constituting the sole restoring means of said stops, a single system of keys for setting the stops, key-restoring springs, means for (letaining the keys when depressed, independent means for detaining the stops when set and for locking the unset stops, means for releasing the keys, and means for releasing the stops.

6. The combination with a series of adding devices, of a system of stops therefor, individual springs constituting the sole restoring means of said stops, a single system of keys for setting said stops, key-restoring springs, means for detaining the set stops in working positions and the unset stops in normal positions during the return of the keys to normal positions after actuation, aiid means for returning the adding devices and stops tonormal positions after the restoration of the keys.

7. The combination with a series of add- 'ing devices, of, a system of stops, individual springs constituting the solerestoring means of said stops, a single system of keys for setting' 'said stops, key-restoring springs, meal-s ,for-fdetainii g' the sets} s in working posite s attera t iwsnsth unset in normal positions, and means for returning the adding devices and stops to normal posii'lOlS after the restoration of the keys; the keys being operable before the return of the il-ddlll" devices and stops to normal positions, for seiectin the sto s to be set for the next operation 0 the ad ing devices.

8. The combination with a system of add-- ing and printingdevices, of power-driven means for operating said system, a single system of keys, key-restorin springs, sto s controlled by said keys for etermining the .extent of movement of said adding and printing devices, individual springs constituting the sole restoring means ofsaid stops, and means for detaining the set stops" and said adding and printing devices in operative positions and the unset stops in normal positions, while said keys return to normal positions.

9. The combination with a system of adding and printing devices, of a power-driven mechanism for operating them, a single system of keys, individual springs constituting the sole restoringvmeans of said stops, means enabling said keysto lock themselves in depressed positions, a set of stops operable by the keys, for determining the workin positions of said adding and printing iiievices, means for detaining the set stops in working positions and the unset stops in normal 'iosi tions, stop-restorii'ig s 'irings. and means controlled by said power-driven mechanism for detaining said stops in working positions and releasing said keys; said keys being depressible during the remaining portionof the operation of said power-driven mechanism, for determining the stops to be set for the next operation of the machine.

10. In a computing machine. the combination with a series of adding devices, of a set of stops, individual springs constituting the sole restoring means of said stops, releasable means for liold ing the set stops in working positions and the unset stops in normal positions, a single system of selflocking keys, key-restoring springs, and means for enabling each key either to set its stop so that the latter may be locked, or to retain the stop in working position for another operation of the adding devices.

'11. Iii-a coin ut-ing'machine, the combinationwitli a series of adding devices, of a set of stops, individual springs constituting the sole restoring means of said stops, releasable means for holding the set stops in W01"- ing positions and the unset stops in normal positions, a single system of self-locking ya, key-restorin springs, stops for arresting-the downwar I and means for enabliii each key either to not ltsstop so that the utter may be locked,

. or to retain the stop in working position for another operation of the adding devices.

12. In a computing inacliiiie, tlie combinathem, of a series of stops, individua power driven mechanism movements of said keys,

tion with a series of adding devices and a power-driven mechanism for oierating lsprings constituting the sole restoring means of said stops, releasab e means for lockin the set stops in working positions and t ie unset stops in normal positions, a single system of keys, key-restoring springs, and means for enabling siu-cessive de ressions of each key, one depression made liefore and the other depression made during the operation of the poi'ver driven mechanism, to effect the setting of its stop for successive operations (if the power-driven mechanism.

13. In ineompnting machine, the combination with a series bf adding devices, of a series of stops, individual sprin s constitutiii the sole restorin means 0 i s'iiid stops, re easable means for ocking the set. stops in workingpositions and the unset stops in normalv positions, a single system of keys, key-restoring springs ,'releasable means for locking each key as it is ale ressed, and yielding connections between t lie keys and the stops,

In a computing machine, the combinaf -'t1onwith a series of adding devices, of a series of stops, individual springs constituting the sole restoring means of said stops, releasable .means for locking the set stopsin working positions and the unsetstbp' f in themselves in working positions, and yield ing connections between the keys and the .stops, to permit the keys to return to noriiia positions ljlikLlYtlllt't! of the stops, and to enable the keys, upon being rei lepressed, to preventthe return of the stops to normal positions when released.

15. In a computing machine, the eoinbina tion with a-series of adding devices, of for operating them, a series of stops, individual springs constituting the sole restoring means, of said stops, means releasable by said power driven mechanism for locking the set stops in working positions and the unset sto s in normal positions, a single system of eys, key-restoring s )rings, stops for arresting the depression of t e keys, key-oprated means releasable by the power-drive in advance of the stops, for locking said keys when depressed, and yilding means between the keys and the stop the keys to set the stops and fr permitting the keys to return to norma posit ons in advance of the stops,-4md-"fo enab keys when reset during the on ration o' the power-driven mechanism, to n event the hum of the previously set st i ositions when released.

'10. In a computing innchin releasable-- "theps to normal' ,liOlllitih|.)05lll()l'iS. t\ single system of keys,

' for enabling tion with a series of adding devices, of a series of stops movable from normal to working positions, individual sprin s constitut- "ville sole restoring meanso said stops, easabie means for locking the operated stops in working positions and theremainin; stops in normal positions, a s ngle system of keys, key-restorii'ig springs, releasable means, fordetaiiiing the keys in their depressed positions, and means for enabling each key, if operated before the stop looking operation, to set its sto or, if opera-ted while the stops are Ioc-ke either to prevent the return of its stop to normal osition or to cause its stop, when release to move fromnormal to working osition.

17. In a computing mac ine, the combination with a series of-adding devices, of power driven means for operating them, a series of stops movable from normal to working positions, individual springs constituting the solerestoriiig means of said stops, means releasable by said power-driven mechanism for simultaneously looking all of the stops whether in normal or working positions, a single system of keys, keyrestor1ng springs, means releasable-by the power-driven mechanism in advance of the release of the stops, for locking saidv keys when depressed, and yielding means for enabling the keys toset v the stops, said yielding means enabling the keys, when depressed before the completion of the operation of the power driven mechanism, either to prevent stops when releasedfrom returning to normal positions, or to cause stops when released, to move to working posit ons.

18. In a computing machine, the combination with a series of adding devices, of a series of stops movable from normal to working positions, means for lockin" the unset stops in normal positions and' t e set stops in working positions, individual springs constituting the sole restor ng means of said stops, :1 single system of keys, keyrestoringsprings, means for enabling said keys to'set said sto s'andto return to normal positions indepen ently of said stops, and releasable means for locking the stops in depressed positions.

19. In a computing machine, thecombination with a series-of adding devices, of a series of stops movable from normal to working ositions, individual springs constituting te sole means for returning said stops to normal positions, a sin le system of keys, springs conne'ctin said and the set stops in working releasable means for-locking 20. In. a computing machine, the combination with a series of addin i-devicesaof power driven means for opera mg sai adding of the power 'ys to said'sto s, key-restoring springs, releasable means or locking the unset-stops in normal positions positions, and t devices, a series of stops movable from normal positions to positions for arrest ing said addin devices, individual springs constituting t e sole means for return; ing said sto s to normal positions, means operable by t e power-driven mechanism for first locking all the set stops in their work-. ing positions and all the unset stops in their normal positions and subsequently releasing all the stops, a single system of'keys, keyrestoring springs, means operated by thekeys for locking them in depressed positions, means operated by the power-driven mechanism prior to the release of said stops, for releasing said keys, and springs connecting the keys to the stops. i

21. In a computing machine, the combination with a series of'a'd'ding devices and means for moving them, of a series of stops therefor, individual springs constituting the sole restoring means of said stops,.a single system of keys depressible in advance of the stops, key-restoring sprin s, means for enabling the sto s to be set by the keys subsef quently to t e. depression of the latter, whereby keys may beset during one adding operation fora subsequent adding operation. 22. In a-coniputing machine, the combination with a series of adding and printing devices and power tlriven mechanism for no crating them, of a series of stops, individual springs constituting the sole restoring'ineans of said stops, a single system of keys for set-- ting the stops key-restoring springs, means for holding t e keys depressed, ineans'for neohsly and subsequently releasing all of ms the stops simultaneously; said key holdin'g means being again operable independently riven mechanism upon de-'- pression of the keys before the vreturn of the" adding devices to normal poa'tion's; and

each of said keys having means-for either setting its stopsimultaneously, or prevent -i ing the return of its stop to normal position, or causing the stop tomove to wor ing. po-- to be effective at the adding and printing devices. 1;

23. In a computing machine, the combinetion with a series of adding and printing devices, of a owerdriven mechanism which 7120 at each comp ete operation causes the move ment away from and back to normal pos'ition of said addingl andprinting'devices, a system of stops an individual springs constituting the sole restoring means- 0r said 125 stops, asingle system of keys, key-restorin springs, yielding connections between sai keys and said stops, means. for enabling the keys to lock themselves in depressed posi- 'tions, means operated by saidpow'er-driven 13 -sition after the depression ofithe key, so as next operation of the,

mechanism at the initial portion of its movement for locking the: stops in both working and normal positions, means operated by. said power-driven mechanism at the locking of said stops, for releasing said keys, and means for subsequently releasing the stops.

24-. hi it computing inachine, the combina tion with a series of adding and printing device's, of a power-driven mechanism which at each cycle of operations causes the move nieiit aavay from and back to normal positions of said adding-devices,-a series of stops for determining the extent of movement of said adding and printing devices, individual 5 springs constituting the sole restoring means of said stops, a single system of keys,- keyrestoring springs, yielding connections between tliekeys and. said stops, means for enabling the keys to lock themselves in degn pressed positions, means operated by said power-driven mechanism at the. initial poi iiou ot' its movementfor locking the stops in both working and normal ositions, means operated by said power drivenniechanisni 25 immediately after the locking of said stops and during the movement of said adding devices toward said stops. toi-releasingsaid keys. so that the kevs may be again 0 erated during the remainder of the cycle 0 operao lions of the pmver-driven mechanism,and

means operated by the lat.ter --for subsequently releasing the stops. I

2?. In a computing.niachine, the combination with aseries of adding devices. of a power driven mechanism 'for operating said adding devices, a series of stops, stop-restoring springs a single system of keys for setting said stops, key-restoring springs releasable bolts for locking said stops,locks for '40 said keys; said key locks being releasable by said power driven mechanism in advance of the release of said stops; and stops upon said adding devices for cooperation with said key stops 26. In a computing machine, the combination with a series of adding devices, of a power driven mechanism for operating said adding devices, a series depressible stops, stop-restoring springs a single's'ystem of keys 5 having stems adjoining said stops, key restoring springs yielding means transmitting.

movement from the keys to the stops, releasable means for locking said stops, locks for ,said keys; the keys being releasable by the power driven mechanism in advance of the adding devices for engag ng saidstops. 27, In a computing machine,thecombina- *reieaseef-saidiops; and stops tiP 0l S tli (L tion of a single systemv of keys' and stems upon which the-keys, are mounted, key re-- storing springs a series of adding devices, a

power driven mechanism for operatingl's'aid adding devices, a series ofist-em's each a join'- ing akey'sten and having a stop, means. for, guiding the key stems and stop stems,vi

springs for returning the stop stems,

e \'t'e itlie latter and. the key stenisflatches -operable'by the key stems for liolding'them in depressed positions, bolts for the stop stems. the latter formed that the: bolts may lock them in both normal and depressed positions, and, means controlled by the power drivenmechanism for moving the bolts to working positions, releasing the key latches and advancing the adding devices until arrested by the depressed stops and permitting-the key latches to resume their normal functions, and returning the adding. devices of the bolts to normal positions.

28. In a computing machine, the eombina tion" with a series of adding; and printing devices, of a power driven mechanism including a main shnt't,.a single system of keys,

restoring springs therefor, latches for holding said keys depressed, a set-of stops, stoprestoringsprings a setof bolts for locking the stops in both normal and abnormal posrtionsfmean's operated at the beginning of the iiiovenient'tt t said shaft fo1',;inovi-ng said 'bolts to operative positions and. for IBlt-Llfiing said keys and advancing said adding and print iig devices until arrested by said stops, prov rion being, made. tor immediately restoring the function of said key latches so that the.keys may be againoperated and thereupon detained bysaid latches, and for restoring said adding and printing devices and said bolts tov normal positions, means operating bet'we'en said keys and stops for enabling the foriiler to set the latter either 100.

simultaneously and before the operation of said bolts, or subsequently to the operation of the keys and after the reciprocation of said bolts to normal positions.

, 29. In a computingmachine,the conibina- 'tion with a series of adding and printing devices, of apower driven rock shaft, a'set of keys,latches for holding saidkeys' depressed, a set of stops, springs for returning said stops to normal positions, springs between said keys and said stops, a set of bolts for locking the stops in both normal and abnormal positions, means for rocking said rock shaft, means rendered operative at the beginning'of the initial moven'ient of said 1 5 rock sha for throwing said bolts into' effective positions, a trip connected to said rock shaft, means operated by said trip the beginning of the 'initial movement of said rock shaftfor releagng sztidkeys; said trip being eonstruoti to release said key releasingI means immediately after releasing the keys, and to -return idLyto .normal positionat the .return stroke of said rock shaft, and means operated upon the return 5' stroke of-said rock shaft for returning said adding and printing devices and said bolts 'to normal positions.

30. In a computing machine, the combination with ,aseries of adding devices,

trolled by said keys for moving said shut ters to iiioperative positions, and means for enabling said bolts when operated to lock in both normal and abnormal positions both raid stops and said shutters.

2-H. l'n a computing machine, the combination with a series of adding devices, of

springs for moving them from normal. positions. shutters nor'm'ally restraining said adding devices against mo ement by said springs, a series of stops,'zil' series of keys, bolts for said stops, late-hes for said keys, a power driven nieehanisln, means controlled by the latter for both operating and releasing said bolts "and for releasing the latches in ath'anre of the bolts, means controlled by said keys for moving-said shutters to in operative positions, and means for enabling said bolts when operated to lock in both normal and abnormal positions both said stops and said shutters; yielding oo nnections being provided between the keys and the shutters. such that when said bolts are released,

said-slmtters may be moved by, said connectionsto inoperative positions."

3-2. In a computing machinejthe combination with a series of adding devices, of springs for moving said adzling devices,

shutters for restraining said adding devicesagainst. noven'ient, a series of keys, means for enabling the keys to release the shutters,

means for causing the keys to return to nor mal positions, a serles of stops. yielding conneetlons between the keys and the stops,

means for looking the stops in both Working .and normal positions am for releasln the stops subsequently to the release of the eys,

stops upon said adding devices to ootiperate with said key operated sto s, and means for preventing release of the s iutter by the keys v while the stops are locked.

33. In a computing machine, the combination with a series of adding dev ces, of springs for menu ing and normal positions and for releasing the stops subsequently to the release of the keys, stops upon said adding devices to co-. operate with said key operated stops, and.

means for preventing release of the shutter by the keys while the stops arelocked;

yielding connections being provided between said keys and said shutters, so that the latterare operated by the depressed keys, subsequently to thejrelease of the stops.

\V. H. -MCFARLAND'. \Vitnesses:

B. O. S'moKNEY,

Krrrln FRANKFURT.

said adding devices,- smtters for restraining said adding devices 

